Cosmic Gamma Ray Bursts |
| A. Janiuk, B. James, K. Sapountzis
Center for Theoretical Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland |
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| Gamma ray bursts are astronomical phenomena detected at highest energies. The gamma ray photons carry energies on the order of mega-electronovolts and arrive to us from the point-like sources that are uniformly distributed in the sky. A typical burst has a form of a pulse that lasts for about a minute. As the Earth atmosphere is not transparent to the very high energy radiation, the bursts are detected by means of telescopes on-board satellites that are placed on the orbit. The total energetics of gamma ray burst events, which is given by the integrated energy flux by the detector unit area, implies that we are witnessing very powerful explosions, where an enormously great power is released within a short time. There is only one way to obtain such huge energies in cosmos: a disruption of a star. |
DOI:10.12693/APhysPolA.139.273 topics: accretion, accretion disks, black hole physics, magnetohydrodynamics (MHD) |